Match the elements given in Column I with the color they impart to the flame given in Column II.

Column I

Column II

A. Cs

1. Apple green

B. Sr

2. Blue

C. Ba

3. Brick red

D. Ca

4. Crimson red

Codes

          A           B          C           D         

1.       1          4          2            3          

2.       2          4           1           3          

3.       1          4           3           2          

4.       4          1           3           2         

Subtopic:  Physical Properties |
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The least basic metal hydroxide among the following is-

1.  Mg(OH)2

2.  Ca(OH)2

3.  Sr(OH)2

4.  Ba(OH)2

Subtopic:  Physical Properties |
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Metallic elements are described by their standard electrode potential, fusion enthalpy, atomic size, etc. The alkali metals are characterized by which of the following properties?

a. High boiling point

b. High negative standard electrode potential

c. High-density

d. Large atomic size

1. (a, b)
2. (b, c)
3. (c, d)
4. (b, d)

Subtopic:  Physical Properties | Preparations, Properties & Uses of S Block Elements |
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Identify the correct formula of halides of alkaline earth metals from the following.

1.  BaCl2·2H2O

2.  BaCl2·4H2O

3.  CaCl2·6H2O

4.  SrCl2·4H2O

Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)

Subtopic:  Physical Properties | Reasoning Questions |
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Those elements impart colour to the flame on heating in it, the atoms of which require low energy for the ionisation (i.e., absorb energy in the visible region of the spectrum). The elements of which of the following groups will impart colour to the flame is-

(a) 2

(b) 13

(c) 1

(d) 17

Choose the correct option

1. (a), (c)

2. (b), (c)

3. (c), (d)

4. (b), (d)

Subtopic:  Physical Properties |
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